工程科学学报，第39卷.第8期：1166-1173,2017年8月 Chinese Journal of Engineering,Vol.39,No.8:1166-1173,August 2017 DOI:10.13374/j.issn2095-9389.2017.08.005;http://journals.ustb.edu.cn 核壳结构Fe3O,@C粒子在UV-Fenton氧化去除VOCs 过程中的吸附-催化作用 陈海英12)，刘杰民)区，袁司夷”，裴一朴3》，赵鹏)，张艳》，颜鲁春6)， 吴传东)，高小雅) 1)北京科技大学化学与生物工程学院，北京1000832)青海大学化工学院，西宁8100163)中国建筑材料科学研究总院，北京100024 4)北京劳动保护科学研究所，北京1000545)北京建筑大学理学院，北京1000446)北京科技大学材料科学与工程学院，北京100083 区通信作者，E-mail:iujm@ustb.cdu.cn 摘要采用一步水热法制备核壳结构FO,@C微米粒子，通过比表面积及孔径分析仪、X射线衍射仪、透射电子显微镜、 傅里叶变换红外光谱仪等对粒子结构和形貌进行表征.并研究了粒子作为非均相催化剂在UV-Fton氧化去除挥发性有机 物(VOCs)中的作用机制.结果表明，核壳结构FO,@C粒子由于包覆了孔隙状碳层而具有较强的吸附能力，可显著增加 VOCs气体分子与Fenton试剂的接触几率，有助于提高VOCs的去除效率.通过计算反应速率常数及协同因子，证实在核壳结 构Fe,O,@C粒子去除VOCs的过程中存在吸附-催化氧化协同作用. 关键词核壳结构粒子：UV-Fenton氧化法：挥发性有机物：吸附-催化作用 分类号X511 Fabrication of Fe,O@C core-shell particles and its application in UV-Fenton oxidize removal of VOCs CHEN Hai-ying 2),LIU Jie-min,YUAN Si-yi),PEI Yi-pu),ZHAO Peng),ZHANG Yan),YAN Lu-chun),WU Chuan- dong',GA0Xiao-ya’ 1)School of Chemistry and Biological Engineering,University of Science and Technology Beijing,Beijing 100083,China 2)School of Chemical Engineering,Qinghai University,Xining 810016,China 3)China Building Materials Academy,Beijing 100024,China 4)Beijing Municipal Institute oflabor Protection,Beijing 100054,China 5)School of Science,Beijing University of Civil Engineering and Architecture,Beijing 100044,China 6)School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China Corresponding author,E-mail:liujm@ustb.edu.cn ABSTRACT The solvothermal method was used to prepare Fe,O,@C core-shell microspheres.The structure and morphology of the nanocomposite powders were characterized by X-ray diffraction,transmission electron microscopy,and Fourier transform infrared spec- troscopy,and then the particles were used as heterogeneous catalysts in the UV-Fenton removal of VOCs in gas.The results show that the FeO@C core-shell microspheres have a strong adsorption capacity for VOCs due to the outer layer of Fe,O being coated with a carbon layer of uniform thickness and pore structure.For sparingly soluble organic gases such as octane,the adsorption of these parti- cles could increase the total concentration of VOCs in the liquid phase.Therefore,the opportunity for the Fenton reagent to be in 收稿日期：2017-01-05 基金项目：国家自然科学基金资助项目(21576023,21407008)：国家重点研发计划资助项目(2016YF0115500,2016YF00700603):中央高 校基本科研业务费资助项目(FRF-TP-15080A1):国家水体污染控制与治理科技重大专项资助项目(2015ZX07205003)工程科学学报,第 39 卷,第 8 期:1166鄄鄄1173,2017 年 8 月 Chinese Journal of Engineering, Vol. 39, No. 8: 1166鄄鄄1173, August 2017 DOI: 10. 13374 / j. issn2095鄄鄄9389. 2017. 08. 005; http: / / journals. ustb. edu. cn 核壳结构 Fe3 O4 @ C 粒子在 UV鄄Fenton 氧化去除 VOCs 过程中的吸附鄄鄄催化作用 陈海英1,2) , 刘杰民1)苣 , 袁司夷1) , 裴一朴3) , 赵 鹏4) , 张 艳5) , 颜鲁春6) , 吴传东1) , 高小雅1) 1) 北京科技大学化学与生物工程学院, 北京 100083 2) 青海大学化工学院, 西宁 810016 3) 中国建筑材料科学研究总院, 北京 100024 4) 北京劳动保护科学研究所, 北京 100054 5) 北京建筑大学理学院, 北京 100044 6) 北京科技大学材料科学与工程学院, 北京 100083 苣 通信作者, E鄄mail: liujm@ ustb. edu. cn 摘 要 采用一步水热法制备核壳结构 Fe3O4@ C 微米粒子,通过比表面积及孔径分析仪、X 射线衍射仪、透射电子显微镜、 傅里叶变换红外光谱仪等对粒子结构和形貌进行表征,并研究了粒子作为非均相催化剂在 UV鄄Fenton 氧化去除挥发性有机 物(VOCs)中的作用机制. 结果表明,核壳结构 Fe3O4 @ C 粒子由于包覆了孔隙状碳层而具有较强的吸附能力,可显著增加 VOCs 气体分子与 Fenton 试剂的接触几率,有助于提高 VOCs 的去除效率. 通过计算反应速率常数及协同因子,证实在核壳结 构 Fe3O4@ C 粒子去除 VOCs 的过程中存在吸附鄄鄄催化氧化协同作用. 关键词 核壳结构粒子; UV鄄Fenton 氧化法; 挥发性有机物; 吸附鄄鄄催化作用 分类号 X511 收稿日期: 2017鄄鄄01鄄鄄05 基金项目: 国家自然科学基金资助项目(21576023, 21407008); 国家重点研发计划资助项目(2016YFE0115500, 2016YFC0700603); 中央高 校基本科研业务费资助项目(FRF鄄TP鄄15鄄080A1);国家水体污染控制与治理科技重大专项资助项目(2015ZX07205003) Fabrication of Fe3O4@ C core鄄shell particles and its application in UV鄄Fenton oxidize removal of VOCs CHEN Hai鄄ying 1,2) , LIU Jie鄄min 1)苣 , YUAN Si鄄yi 1) , PEI Yi鄄pu 3) , ZHAO Peng 4) , ZHANG Yan 5) , YAN Lu鄄chun 6) , WU Chuan鄄 dong 1) , GAO Xiao鄄ya 1) 1) School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China 2) School of Chemical Engineering, Qinghai University, Xining 810016, China 3) China Building Materials Academy, Beijing 100024, China 4) Beijing Municipal Institute ofLabor Protection, Beijing 100054, China 5) School of Science, Beijing University of Civil Engineering and Architecture, Beijing 100044, China 6) School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China 苣 Corresponding author, E鄄mail: liujm@ ustb. edu. cn ABSTRACT The solvothermal method was used to prepare Fe3O4@ C core鄄shell microspheres. The structure and morphology of the nanocomposite powders were characterized by X鄄ray diffraction, transmission electron microscopy, and Fourier transform infrared spec鄄 troscopy, and then the particles were used as heterogeneous catalysts in the UV鄄Fenton removal of VOCs in gas. The results show that the Fe3O4@ C core鄄shell microspheres have a strong adsorption capacity for VOCs due to the outer layer of Fe3O4 being coated with a carbon layer of uniform thickness and pore structure. For sparingly soluble organic gases such as octane, the adsorption of these parti鄄 cles could increase the total concentration of VOCs in the liquid phase. Therefore, the opportunity for the Fenton reagent to be in